PLL Episode 2x10 - Touched by an "A"-gel

Clues in this Episode that Aria isA

Spencer and Emily have been sort of suspicious of Jason and what he actually know about the girls and the night at Ali went missing. Jason had recently moved back into the house that his family lived in before Ali disappeared. When Jason is out one night, Spencer and Emily decide to take a look around the house to see if they can find anything that he is hiding or that he can use against the girls in anyway. Spencer and Emily notice that there is a key on top of the shed to get into Jason's dark room. When they go int there to check out what's there they notice that there lots of camera equipment and pictures, but not just any pictures. They're all pictures of Aria. When the girls tell Aria about all of these pictures that Jason has of her, she gets a little angry and a little scared. She deicides to approach him about all of the pictures that he took of her. Aria says to Jason:

Aria: "Why did you take them and when?"

Jason: "I didn't, Ali did."

Looks like Ali took pictures of Aria before she disappeared. With all that camera equipment that Jason had of Ali's in his dark room, Ali really must have been trying to spy on someone important. She was probably trying to spy on A because she wanted to know who A and why they were threatening and torturing her. It looks like, considering all the pictures of Aria, that Ali was a little suspicious that Aria is A and she was the one threatening her. I would make sense why Ali had so many pictures of her! Do you think Ali was worried that Aria was the one who was threatening her and that's why she had so many picture of her and so much spy equipment? Is this a clue that Ali was worried that Aria is A? Is she A? Was Ali right to worry? It would make sense if Aria is A! There are just so many clues!